// Copyright  2004-2008 Backplane Ltd.
//
// This file is part of Ubiquity formsPlayer
//
// Ubiquity formsPlayer is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3 of the License, or (at your
// option) any later version.
//
// Ubiquity formsPlayer is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License
// along with Ubiquity formsPlayer If not, see <http://www.gnu.org/licenses/>.
//	
//
//   Purpose: declaration of CImplSingleNodeBindingOnDemand.
//   $Id$
#pragma once

class CImplModel;
class CSingleNodeBindingOnDemand
{
public:
	CSingleNodeBindingOnDemand(CImplModel * pModel,BSTR bsXPathExpression);
	virtual ~CSingleNodeBindingOnDemand(void);
	//<summary>
	// Executes the stored xpath expression in the stored model
	//	using the execution context node given by pContext, returns
	//	the resulting node in ppRetval.
	//</summary>
	//<remarks>
	//	pContext can be null, in which case, the default evaluation context
	//	for the model given in the constructor will be used.
	//</remarks>
	HRESULT GetNode(IXMLDOMNode * pContext,IXMLDOMNode ** ppRetval);
private:
	CComBSTR m_sExpression;
	CImplModel * m_pModel;
};
